Symptoms of toxoplasmosis in cats

       The life cycle of Toxoplasma gondii is complex, and the whole process needs to go through two kinds of hosts: intermediate host and terminal host. The forms of Toxoplasma gondii in the host body are also various, including tachyzoites with strong infectivity, bradyzoites with slow growth and poor infectivity, and oocysts.

       (1) Intermediate host: human, dog, cat, mouse, etc

       In the intermediate host, Toxoplasma gondii will complete the development process of extraintestinal phase, and enter the cells of various organs (brain, eye, lung, liver, lymph, muscle, etc.) through blood or lymph circulation to develop and proliferate, causing damage to corresponding organs. This process will not excrete oocysts through feces.

       (2) Final host: only cats

       Route of infection

       Intermediate or terminal hosts ingest food containing infected worms (including tachyzoites, bradyzoites and mature oocysts), including unreasonably processed meat products, dairy products, egg products and drinking water.

       *Studies have shown that, under very low probability, Toxoplasma gondii can be infected through mouth, nose, conjunctiva or damaged skin and mucous membrane; flies, cockroaches, earthworms and other vectors can be used to transmit Toxoplasma gondii oocysts; arthropods carrying oocysts also have certain transmission significance.

       clinical manifestation

       The infection of Toxoplasma gondii depends on the virulence of the strain, the quantity of infection, the route of infection and the immunity of the host. The sensitivity of cats to Toxoplasma gondii is poor, only a few of them will have clinical symptoms, and the damage to the body is very limited.

       (1) Conditions of onset

       -The virulence of the host infected strains was very strong and could not produce enough immunity.

       (2) Non onset conditions (most cases)

       -The virulence of Toxoplasma gondii strains was weak, and the host quickly developed immunity, resulting in the inhibition of Toxoplasma gondii reproduction;


       Cats should be tested for Toxoplasma gondii in the following situations:

       -There are pregnant or poor immunity members in the family;

       There are various detection methods for Toxoplasma gondii. In consideration of “whether the cat itself is infected with Toxoplasma gondii” and “whether the cat has the risk of transmitting Toxoplasma gondii to other animals or people”, fecal egg detection and serum antibody detection are commonly used for comprehensive judgment in clinic.

       (1) Fecal egg test was positive

       The results showed that the cat was infected with Toxoplasma gondii and was in the stage of excretion of Toxoplasma gondii. If there are clinical symptoms, they can be relieved according to the situation; if there are no clinical symptoms, only drugs are needed to inhibit the growth of the insect.

       (2) Fecal eggs were negative



       Cats with normal immune function have a good prognosis when infected with Toxoplasma gondii; cats with abnormal immune function (such as congenital or acquired immune deficiency) may have severe clinical manifestations, which should be treated in time and prognosis should be cautious.


       Cat is not only the intermediate host but also the terminal host of Toxoplasma gondii. Therefore, it is necessary to consider the prevention of cats themselves and the prevention of people or other susceptible animals (such as dogs) living together.

       (1) Prevention of foodborne infection

       -Cooking methods

       -Preparation before cooking

       In general, Toxoplasma gondii can be killed as long as the internal temperature is greater than 67 ¡æ (f) when cooking meat. Since microwave can not guarantee complete and uniform heating, it is not recommended. Domestic refrigerators can also kill Toxoplasma gondii by freezing meat at – 12 ¡æ for more than 24 hours.

       (2) Prevention of environmental infection

       -Do not drink untreated raw water / tap water directly;

       -Wear gloves when contacting with external soil, sand or cat litter basin, and wash hands with soap and warm water after contact;

       -Inform children of the importance of hand washing;

       -Feed cats with dry food, wet food or fully cooked / frozen homemade food. Avoid feeding raw meat or semi cooked meat directly;

       -For cats with confirmed or suspected Toxoplasma gondii infection, the litter should be cleaned and replaced every day to prevent the oocysts in the sand basin from becoming infectious oocysts.


       What is Toxoplasma?

       1. Nickname

       Toxoplasma gondii, also known as three corpse worms, three Peng, three corpses, three corpse gods, is a kind of intracellular parasitism. Parasitic in the cells, with the blood flow, to all parts of the body.

       2. Hazards

       Toxoplasmosis is an infection of humans and animals caused by Toxoplasma gondii. Toxoplasma gondii belongs to the smallest and simple parasite called protozoa. It will damage the brain, heart, fundus, resulting in decreased immunity, suffering from various diseases.

       3. Performance

       Human: may cause the pregnant woman abortion, premature birth, abnormal fetus or stillbirth, especially in the early pregnancy infection, the incidence of abnormal pregnancy is high. In neonatal period, there are fever, rash, vomiting, diarrhea, jaundice, hepatosplenomegaly, anemia, myocarditis, epilepsy, etc. Fusion pneumonia is a common cause of death.

       Cat: as an intermediate host of infection, the symptoms can be divided into acute type and chronic type.

       Acute type: sick cat fever, body temperature is often above 40 ¡æ. Poor spirit, anorexia, drowsiness, dyspnea. Sometimes vomiting and diarrhea occur. Pregnant cats may have stillbirth and miscarriage.

       Chronic type: loss of appetite, emaciation and anemia, sometimes neurological symptoms. Pregnant cats can also have miscarriage and stillbirth. If the cat is the terminal host, the symptoms of infection are mild and the diarrhea is mild.

       How does cat get toxoplasmosis to do?

       3. Prevention and control: keep the cat house clean and sanitary, deal with the cat’s excrement in time, disinfect regularly, and disinfect the fetus, excrement and abortion site strictly to prevent environmental pollution

       Because Toxoplasma gondii is a disease that can infect people, you should pay special attention to keeping pets, especially cats.

       Toxoplasmosis in cats is caused by Toxoplasma gondii, an intracellular parasite of coccidia. There are cases all over the world. About 30% of cats are infected by eating raw meat.

       Alias: toxoplasmosis

       Family and genus: parasitic diseases

       Symptoms: arrhythmia, temperature rise, dyspnea, cough, eye swelling, blindness, asthma, fever, loss of appetite, no food, depression, weakness, anemia, diarrhea, bloody stool, jaundice, vomiting.

       Toxoplasmosis: a common disease in cats

       Congenital vertical infection of infected female cats or infection after swallowing infected oocysts. Cats living outdoors are at risk of infection when hunting and swallowing intermediate hosts or mechanical vectors of Toxoplasma gondii, such as beetles, earthworms and rodents. In addition, young cats eating raw meat can also be infected with toxoplasmosis.

       The most important differential diagnosis of toxoplasmosis in cats is bacterial pneumonia and dyspnea.

       Toxoplasmosis: a common disease in cats

       Toxoplasmosis: a common disease in cats

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